linux-kernel - Re: [PATCH v2 2/4] introduce post-init read-only memory

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Message-ID: <565CCCBB.1070500@zytor.com>
Date:	Mon, 30 Nov 2015 14:24:59 -0800
From:	"H. Peter Anvin" <hpa@...or.com>
To:	pageexec@...email.hu, linux-kernel@...r.kernel.org,
	Kees Cook <keescook@...omium.org>
Cc:	Andy Lutomirski <luto@...capital.net>,
	Michael Ellerman <mpe@...erman.id.au>,
	Mathias Krause <minipli@...glemail.com>,
	Ingo Molnar <mingo@...hat.com>,
	Thomas Gleixner <tglx@...utronix.de>, x86@...nel.org,
	Arnd Bergmann <arnd@...db.de>,
	Emese Revfy <re.emese@...il.com>,
	kernel-hardening@...ts.openwall.com,
	linux-arch <linux-arch@...r.kernel.org>
Subject: Re: [PATCH v2 2/4] introduce post-init read-only memory

On 11/25/15 16:15, PaX Team wrote:
> On 25 Nov 2015 at 15:31, Kees Cook wrote:
> 
>> diff --git a/include/asm-generic/vmlinux.lds.h b/include/asm-generic/vmlinux.lds.h
>> index c4bd0e2c173c..772c784ba763 100644
>> --- a/include/asm-generic/vmlinux.lds.h
>> +++ b/include/asm-generic/vmlinux.lds.h
>> @@ -256,6 +256,7 @@
>>   .rodata           : AT(ADDR(.rodata) - LOAD_OFFSET) {		\
>>    VMLINUX_SYMBOL(__start_rodata) = .;			\
>>    *(.rodata) *(.rodata.*)					\
>> +		*(.data..ro_after_init)	/* Read only after init */	\
>    ^^^^^^^^^^^
> looks like it's tabs vs. spaces...
> 

One more thing... double dots I think has special meanings to gcc, so it
might be better to avoid.

	-hpa


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